| ( | 1 | − | 1 | ÷ | 6 | ) | X | + | ( | 120 | − | X | ) | ( | 1 | + | 1 | ÷ | 8 | ) | = | 114 |
| 方程左边 = | 1 | X | − | 1 | ÷ | 6 | × | X | + | ( | 120 | − | X | ) | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 1 | X | − | 1 6 | X | + | ( | 120 | − | X | ) | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | ( | 120 | − | X | ) | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | 120 | ( | 1 | + | 1 | ÷ | 8 | ) | − | X | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | 120 | × | 1 | + | 120 | × | 1 | ÷ | 8 | − | X | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | 120 | + | 15 | − | X | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | 135 | − | X | ( | 1 | + | 1 | ÷ | 8 | ) |
| = | 5 6 | X | + | 135 | − | X | × | 1 | − | X | × | 1 | ÷ | 8 |
| = | 5 6 | X | + | 135 | − | X | × | 1 | − | X | × | 1 8 |
| = | - | 7 24 | X | + | 135 |
| - | 7 24 | X | + | 135 | = | 114 |
| - | 7 24 | X | = | 114 | − | 135 |
| - | 7 24 | X | = | - | 21 |
| 21 | = | 7 24 | X |
7 24 | X | = | 21 |
| X | = | 21 | ÷ | 7 24 |
| = | 21 | × | 24 7 |
| = | 3 | × | 24 |
| X | = | 72 |